local tbItem = Item:GetClass("LotteryTicket")
function tbItem:OnUse(it)
  local bSuccess = Lottery:ExchangeTicket(me)
  if not bSuccess then
    return
  end
  return 1
end
function tbItem:GetTip(it)
  return string.format("本周已使用：%d 张", Lottery:GetTicketCount())
end
